EP3507591A1 - Méthode et dispositif pour augmenter la sensibilité de la mesure en ligne de la propreté de surface des bandes d'acier - Google Patents
Méthode et dispositif pour augmenter la sensibilité de la mesure en ligne de la propreté de surface des bandes d'acierInfo
- Publication number
- EP3507591A1 EP3507591A1 EP17754136.4A EP17754136A EP3507591A1 EP 3507591 A1 EP3507591 A1 EP 3507591A1 EP 17754136 A EP17754136 A EP 17754136A EP 3507591 A1 EP3507591 A1 EP 3507591A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- line
- plasma
- sheet
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 230000003749 cleanliness Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 title claims description 15
- 239000010959 steel Substances 0.000 title claims description 15
- 230000035945 sensitivity Effects 0.000 title description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 238000005238 degreasing Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000005097 cold rolling Methods 0.000 claims description 9
- 239000013307 optical fiber Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 230000002000 scavenging effect Effects 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 230000002596 correlated effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 33
- 229910052742 iron Inorganic materials 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 8
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000007430 reference method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000001636 atomic emission spectroscopy Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- -1 carbon nitrides Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001307 laser spectroscopy Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/718—Laser microanalysis, i.e. with formation of sample plasma
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6463—Optics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6484—Optical fibres
Definitions
- the present invention relates to a method for increasing the sensitivity of the online measurement of the surface cleanness of a strip or metal sheet in continuous scrolling, based on the LIBS method (for laser-induced breakdown spectroscopy or spectroscopy on laser-induced plasma).
- the invention also relates to a device for implementing the method.
- the method proposed by the Applicant is effective after cold rolling where the level of carbon pollution is of the order of several hundred milligrams of carbon per square meter. On the other hand, after degreasing, this level falls to less than a few tens of milligrams per square meter and the use of a carbon line partially absorbed by the oxygen of the air is insufficient to guarantee a precise measurement at these levels of cleanliness. Furthermore, it is known from the literature that the carbon present in organic compounds can be advantageously measured by the reaction thereof in a plasma with atomic nitrogen from air or an atmosphere of carbon dioxide. nitrogen gas surrounding the plasma.
- This technique has in particular been used for the analysis of thin deposits of carbon nitrides (CN emission spectroscopy study of carbon plasma in nitrogen environmenf, S. Abdelli-Messaci et al., Spectrochimica Acta Part B 60 (2005) 955 - 959) and for differentiation of explosives, P. Lucena et al., Spectrochimica Acta Part B 66 (201 1) 12-20).
- the document WO 2009/138262 A1 provides a method for measuring the cleanliness of an in-line automated steel strip, consisting in analyzing by image processing an oxidized ring created on the surface of the strip. by a laser or electron beam.
- the present invention aims to provide a method of measuring the surface cleanness of a web or metal sheet in continuous scrolling obtained by cold rolling at the outlet of the degreasing lines. This is to allow a separate measurement of surface carbon pollution and fine iron which is possible in the current state of the art at the exit of the cold rolling line where pollution levels are significantly higher.
- This invention also aims to provide a device to achieve the desired accuracy in the measurement of surface cleanness of steel sheets at the exit of the degreasing lines.
- a first aspect of the present invention relates to an automated, online method of measuring the differentiated carbon surface cleanliness of a continuously moving strip or sheet metal having a surface pollution level of less than 100 mg / m 2 , preferably less than 50 mg / m 2 , characterized by the following steps:
- a beam of radiation is generated by means of a source
- the beam of radiation is focused by means of a focusing device so that the energy density deposited on the strip or metal sheet is sufficient to create a plasma and to generate CN radicals in the plasma if it contains carbon and nitrogen;
- a nitrogen atmosphere is created around the plasma by means of a scanning system with a flow rate capable of preventing any oxygen from being present in the plasma;
- the light emitted by the plasma is analyzed by means of an optical collection device and this emitted light is redirected towards a spectrometer or any other means for separating the wavelengths of the emitted light;
- the intensity of an intense vibration line of the radical CN is measured and this intensity is compared with that of a line of vibration of the nitrogen, in order to compensate for the fluctuations related to the radiation beam and to the radiation-matter interactions , the intense vibration line of the radical CN being the vibration line at 388.25 nm and the vibration line of the nitrogen being the vibration line at 500.51 nm, and the ratio obtained is used to characterize the cleanliness of the surface of the strip or metal sheet in terms of carbon pollution.
- Preferred embodiments of the method of the invention also include, in combination, one or more of the following features:
- said radiation beam is a laser beam or an electron beam
- the desired energy density on the strip or sheet surface is obtained by means of a laser beam of adequate power and focal diameter, the beam being focused on said surface either directly or by improved focusing by an optical device; prior expansion of the beam;
- the laser is a pulsed laser, said laser and the focusing device being chosen to create an energy density at the surface of the strip or metal sheet between 10 and 100 GW / cm 2 and preferably between 30 and 60 GW / cm 2 ;
- the optical collection device is a plurality of lenses or mirrors or a combination of the two which image the plasma on the end of an optical fiber, which itself redirects the light beam towards the spectrometer or another means of separating the wavelengths of the emitted light;
- the strip or metal sheet is a steel strip
- the running speed of the strip or the metal sheet (3) is greater than 0.5 m / s;
- the method is used in the case of a cold rolling line and after passing through a degreasing bath.
- Another aspect of the invention relates to a device for online measurement, automated, surface cleanliness of a strip or metal sheet in continuous scrolling, characterized in that it comprises:
- a pulsed laser generating a beam with a diameter of between 0.5 and 10 mm, in the form of pulses of duration between 0.5 and 15 ns, with a energy between 1 and 300 mJ per pulse, for the generation of a plasma on the surface of the strip or metal sheet;
- a focusing device allowing beam expansion by a factor of between 2 and 10 and making it possible to focus the beam on the strip or metal sheet at a distance of between 10 and 200 cm;
- a nitrogen scavenging system in the vicinity of the plasma on the strip or metal sheet with a flow rate capable of preventing any presence of oxygen from the air in the plasma;
- an optical collection device comprising a plurality of lenses, mirrors or a combination of both, for imaging the light emitted by the plasma on an optical fiber;
- Figure 1 shows a block diagram of the device used according to the present invention, incorporating the main elements such as the radiation source, the focusing optics, the strip or sheet running, the feed system of the invention. nitrogen around or near the plasma, the light collecting device and the analysis spectrometer.
- FIG. 2 shows an example of a spectrum containing the CN and N specific lines used for the determination of surface carbon pollution.
- Figure 3 shows, in one example, a comparison between the measurements made according to the method and with the device of the invention and the measurements made in the laboratory by a reference method (combustion method). Description of a preferred embodiment of the invention
- the method and the device proposed according to the present invention improve the method and the device described in the state of the art for the analysis by LIBS of the carbon surface cleanliness of the strips and metal sheets in scrolling, by example steel.
- the method described is based on the measurement of radical lines CN, which is known from the literature but, to the knowledge of the inventors, has never been implemented to improve the measurement of the surface cleanness of metal strips or sheets. .
- the principle of improvement is described below, with an example of implementation.
- the beam of a laser 1, preferably pulsed, is focused with the aid of an appropriate optical device 2, on the surface of the sheet metal or scrolling metal strip 3.
- the power of the laser and the focal diameter are advantageously chosen so that the power density obtained on the sheet is sufficient to create a plasma on the surface of the sheet.
- the energy of the laser pulses and the focusing device are chosen so as to create an energy density of between 10 and 100 GW / cm 2 , ideally between 30 and 60 GW / cm 2 so as to generate CN radicals in the presence of nitrogen and carbon.
- such an energy density can be obtained using a laser, generating a beam of 3 mm in diameter, in the form of pulses of 8 ns and an energy of 50 mJ per pulse, associated with an optical device that causes an expansion of the beam by a factor of 8 and then focuses said beam at a distance of 30 centimeters. Under these conditions, a focal point of 150 ⁇ in diameter and a power density of approximately 35 GW / cm 2 are obtained.
- the zone in the vicinity of the sheet where the plasma is created is subjected to a nitrogen sweep 4 so as to obtain CN radicals in the presence surface carbon pollution while preventing some of this carbon from reacting with oxygen in the air.
- the light emitted by the plasma is then collected by a set of lenses 5 which image the plasma on the end of an optical fiber 6 which, itself, redirects the light to an analysis device such as a spectrometer 7.
- the method according to the invention then uses the vibration line (0-
- any other suitable line, CN radicals optimally created by the choice of device described above.
- the intensity of this line is advantageously related to a nitrogen line (in that the ratio of their respective intensities is carried out), preferably the line at 500.51 nm, which is sufficiently intense and which presents little interference with other elements. This ratio makes it possible to dispense with fluctuations in the overall luminous intensity of the plasma related, for example, to variations in the intensity of the laser beam or the radiation-material coupling.
- an iron line is used as a reference.
- the presence of iron fines causes relative variations in the intensity of the iron lines, depending on the energy required to create them.
- the use of an iron line is therefore less reliable than that of nitrogen, which will be more stable given the nitrogen saturation around the plasma following the use of the nitrogen scanner 4.
- FIG. 2 gives an example of a spectrum chosen on a sheet before degreasing in order to highlight the lines used to apply the method of the invention.
- FIG. 3 gives an example of a comparison between the measurements made by the method and the device of the invention on the one hand and the results of the analyzes by a laboratory reference method (combustion method). The different cases correspond to three different steels analyzed under the following conditions (ie three groups of three points from right to left in Figure 3):
- the method of the invention makes it possible to discriminate surface pollution levels varying from the cold rolling output state to very low levels of pollution.
- This method has the advantage of determining the surface carbon pollution using a CN line whose measurement conditions (laser energy coupled with the focusing device, nitrogen scavenging ) optimize the intensity.
- the use of the CN line located in the near UV eliminates the absorption of oxygen from the air, unlike the intense carbon line at 193 nm.
- the nitrogen atmosphere created around the plasma prevents the formation of an oxide layer around the impact zone of the laser after the extinction of the plasma.
- the formation of this oxide could, disadvantageously, locally change the thermal emissivity of the sheet and very locally change the absorption of thermal energy during passage in the furnaces, before galvanizing for example.
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2016/5674A BE1024529B1 (fr) | 2016-09-02 | 2016-09-02 | Méthode et dispositif pour augmenter la sensibilité de la mesure en ligne de la propreté de surface des bandes d'acier |
PCT/EP2017/070373 WO2018041597A1 (fr) | 2016-09-02 | 2017-08-10 | Méthode et dispositif pour augmenter la sensibilité de la mesure en ligne de la propreté de surface des bandes d'acier |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3507591A1 true EP3507591A1 (fr) | 2019-07-10 |
EP3507591B1 EP3507591B1 (fr) | 2020-07-08 |
Family
ID=56990187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17754136.4A Active EP3507591B1 (fr) | 2016-09-02 | 2017-08-10 | Méthode et dispositif pour augmenter la sensibilité de la mesure en ligne de la propreté de surface des bandes d'acier |
Country Status (6)
Country | Link |
---|---|
US (1) | US11215561B2 (fr) |
EP (1) | EP3507591B1 (fr) |
CN (1) | CN109564164B (fr) |
BE (1) | BE1024529B1 (fr) |
ES (1) | ES2812706T3 (fr) |
WO (1) | WO2018041597A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024165632A1 (fr) * | 2023-02-09 | 2024-08-15 | Refractory Intellectual Property Gmbh & Co. Kg | Procédé et dispositif d'examen pour détermination de la composition chimique d'un matériau réfractaire usagé |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2237206A (en) * | 1939-12-06 | 1941-04-01 | James R Watson | Hydraulic brake impulse regulator for trailers |
US5537206A (en) * | 1993-11-02 | 1996-07-16 | Nkk Corporation | Method for analyzing steel and apparatus therefor |
JP3212551B2 (ja) * | 1998-02-02 | 2001-09-25 | 新日本製鐵株式会社 | レーザ溶接方法および装置 |
US6343877B1 (en) * | 1999-04-15 | 2002-02-05 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Spindle motor |
TW200537695A (en) * | 2004-03-19 | 2005-11-16 | Adv Lcd Tech Dev Ct Co Ltd | Insulating film forming method, insulating film forming apparatus, and plasma film forming apparatus |
JP2005281773A (ja) * | 2004-03-30 | 2005-10-13 | Hiroshi Takigawa | 防着カバー、物質生成装置、及び被処理物 |
US8125627B2 (en) * | 2007-04-27 | 2012-02-28 | Alakai Defense Systems, Inc. | Laser spectroscopy system |
BE1018132A3 (fr) | 2008-05-14 | 2010-05-04 | Ct Rech Metallurgiques Asbl | Methode de mesure de la proprete des bandes d'acier. |
CN201955303U (zh) * | 2011-01-10 | 2011-08-31 | 东南大学 | 对材料表面清洁度进行检测的装置 |
CN102147363B (zh) * | 2011-01-10 | 2013-02-13 | 东南大学 | 对材料表面清洁度进行检测的装置及方法 |
CZ2011408A3 (cs) * | 2011-07-04 | 2013-05-09 | Ústav prístrojové techniky Akademie ved CR, v.v.i. | Zarízení pro svarování laserem a zpusob rízení kvality svaru |
CN103324851B (zh) * | 2013-06-24 | 2015-12-02 | 云南省农业科学院农业环境资源研究所 | 一种用碳素控制农田土壤氮素面源污染的方法 |
CN103981330B (zh) * | 2014-05-27 | 2016-03-23 | 北京佰能电气技术有限公司 | 一种测量钢水含碳量的方法及装置 |
JP2015224496A (ja) * | 2014-05-29 | 2015-12-14 | 東北岡島工業株式会社 | グレーチング及びその製造方法 |
CN204195106U (zh) * | 2014-10-31 | 2015-03-11 | 浙江久德不锈钢型材有限公司 | 一种在线带钢清洁装置 |
CN104568917A (zh) * | 2014-12-29 | 2015-04-29 | 内蒙古包钢钢联股份有限公司 | 钢中铌的碳氮化物含量的测定方法 |
CN105486808B (zh) * | 2015-08-25 | 2017-09-29 | 武汉钢铁有限公司 | 便携式带钢表面清洁在线检测装置及使用方法 |
US9797776B2 (en) * | 2015-09-04 | 2017-10-24 | Bwt Property, Inc. | Laser induced breakdown spectroscopy (LIBS) apparatus based on high repetition rate pulsed laser |
CN105758843B (zh) * | 2016-04-19 | 2018-11-27 | 长江大学 | 一种基于激光诱导击穿光谱的油料作物种子含油量检测方法 |
-
2016
- 2016-09-02 BE BE2016/5674A patent/BE1024529B1/fr not_active IP Right Cessation
-
2017
- 2017-08-10 CN CN201780047710.1A patent/CN109564164B/zh active Active
- 2017-08-10 WO PCT/EP2017/070373 patent/WO2018041597A1/fr unknown
- 2017-08-10 EP EP17754136.4A patent/EP3507591B1/fr active Active
- 2017-08-10 ES ES17754136T patent/ES2812706T3/es active Active
- 2017-08-10 US US16/322,502 patent/US11215561B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2018041597A1 (fr) | 2018-03-08 |
US11215561B2 (en) | 2022-01-04 |
BE1024529B1 (fr) | 2018-04-03 |
CN109564164A (zh) | 2019-04-02 |
BE1024529A1 (fr) | 2018-03-27 |
ES2812706T3 (es) | 2021-03-18 |
CN109564164B (zh) | 2021-12-28 |
US20210381975A1 (en) | 2021-12-09 |
EP3507591B1 (fr) | 2020-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3544760B1 (fr) | Procédé de décapage laser d'un produit métallique en défilement, et installation pour son exécution | |
EP2277030B1 (fr) | Methode de mesure de la proprete des bandes d'acier | |
EP0654663B1 (fr) | Procédé d'analyse élémentaire par spectrométrie d'émission optique sur plasma produit par laser en présence d'argon | |
Sibillano et al. | Correlation spectroscopy as a tool for detecting losses of ligand elements in laser welding of aluminium alloys | |
Sibillano et al. | Correlation analysis in laser welding plasma | |
EP3507591B1 (fr) | Méthode et dispositif pour augmenter la sensibilité de la mesure en ligne de la propreté de surface des bandes d'acier | |
Yeo et al. | A strategy to prevent signal losses, analyte decomposition, and fluctuating carbon contamination bands in surface-enhanced Raman spectroscopy | |
WO2008067620A1 (fr) | Installation et procede pour le contrôle en ligne d'un bain de galvanisation | |
Yu et al. | Surface-enhanced laser-induced breakdown spectroscopy utilizing metallic target for direct analysis of particle flow | |
EP2901139B1 (fr) | Methode et systeme d'analyse de particules dans un plasma froid | |
Sibillano et al. | Real-time monitoring of laser welding by correlation analysis: the case of AA5083 | |
Hai et al. | Use of dual-pulse laser-induced breakdown spectroscopy for characterization of the laser cleaning of a first mirror exposed in HL-2A | |
Tang et al. | Micro-destructive analysis with high sensitivity using double-pulse resonant laser-induced breakdown spectroscopy | |
Tawfik et al. | Damage profile of HDPE polymer using laser-induced plasma | |
Miller et al. | Methods for globally treating silica optics to reduce optical damage | |
Chen et al. | The role of Na+ in Al surface corrosion studied by single-shot laser-induced breakdown spectroscopy | |
WO2023007221A1 (fr) | Procédé et installation de décapage d'une couche d'oxyde d'un produit métallique | |
Sarantopoulou et al. | Removing foxing stains from old paper at 157 nm | |
EP1549933A1 (fr) | PROCEDE ET DISPOSITIF DE SPECTROSCOPIE D EMISSION OPTIQUE D& apos;UN LIQUIDE EXCITE PAR LASER | |
JP2011112546A (ja) | ガス中のガス成分計測装置及び方法 | |
Miyauchi et al. | Simultaneous optical second harmonic and sum frequency intensity image observation of hydrogen deficiency on a H–Si (1 1 1) 1× 1 surface after IR light pulse irradiation | |
Kaplan et al. | Analytical performance characteristics of Micro-structured surfaces for laser-induced breakdown spectroscopic analysis of liquids | |
Krauth | Measurement and control of steel sheet surface cleanliness | |
WO2024135276A1 (fr) | Procédé d'analyse d'un liquide contenant des particules, procédé de maintien d'un bain chaud de galvanisation, procédé de production d'une tôle d'acier galvanisée à chaud, et dispositif d'analyse de liquide contenant des particules | |
Takenaka et al. | Spectroscopic Analysis of Blue Diode Laser Induced Plume Generated by Welding of Pure Copper |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190117 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20200206 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 1288992 Country of ref document: AT Kind code of ref document: T Effective date: 20200715 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602017019489 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1288992 Country of ref document: AT Kind code of ref document: T Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201109 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201008 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201008 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201009 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201108 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2812706 Country of ref document: ES Kind code of ref document: T3 Effective date: 20210318 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602017019489 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200831 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200831 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
26N | No opposition filed |
Effective date: 20210409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200810 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230413 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230727 Year of fee payment: 7 Ref country code: ES Payment date: 20230904 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20240723 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20240723 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240723 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20240723 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20240723 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20240723 Year of fee payment: 8 |